Differences between the command splagvar's Syntax

[iris lee]

Hello all,

I will appreciate a lot if anyone could tell me about the differences between the two codes:

        splagvar  y,wname(weight)wfrom(Stata)order(1)ind(y,  wname(weight)  wfrom(Stata)  order(1)   ind( x) 
        splagvar ,qvar(x)qname(x ) qname(xsplag)

Kind regards,
Iris